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M EANING OF DBMS DBMS (database management system): Collection of programs that manages database structure and controls access to data Possible to share data among multiple applications or users Makes data management more efficient and effective is software designed to assist in maintaining and utilizing large collections of data

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T HE DBMS M ANAGES THE I NTERACTION B ETWEEN THE E ND U SER AND THE D ATABASE

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T YPES OF D ATABASES Single-user: Supports only one user at a time Desktop: Single-user database running on a personal computer Multi-user: Supports multiple users at the same time Workgroup: Multi-user database that supports a small group of users or a single department Enterprise: Multi-user database that supports a large group of users or an entire organization

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L OCATION OF D ATABASES Centralized: Supports data located at a single site Distributed: Supports data distributed across several sites